<catalogs>
  <catalog name="ACC" xml:base="http://example.org/ACC/">
    <product number="443" href="prod443.html"/>
    <product number="563" href="prod563.html"/>
  </catalog>
  <catalog name="WMN" xml:base="http://example.org/WMN/">
    <product number="557" href="prod557.html"/>
  </catalog>
</catalogs>
